﻿ALPHEUS PUBESCENS. 



109 



11. Alpheus pubescens, n. sp. 



Station 43. Anchorage ojff Pulu Sarassa, Postilion- 

 islands. Depth up to 30 M. 

 Station 60. Haingsisi, Samau-island, Timor. Depth 

 36 M. 



Station 71. Makassar. Depth up to 32 M. 



Station 77. Lat. 8° 27' S., long. 117° 36' E. Borneo- 

 bank. Depth 59 M. 



Station 162. Between Loslos and Broken-islands, 

 west-coast of Salawatti. Depth 18 M. 



Station 273. Anchorage off Pulu Jedan, East coast 

 of Aru-islands. Depth 13 M. 



A new species of small size of the group „brevirostris'\ 

 the male being 20,5 mm. long, the egg-bearing female 

 18 mm. 



Carapace covered with a close, though short pubes- 

 cence. Rostrum acute, narrow, reaching to 'the middle 

 of the visible part of 1st joint of antennular peduncle, 

 rostral carina continued to the middle of the carapace, 

 obtuse in the male, a little sharper in the female, and 

 separated from the rounded, unarmed orbital hoods by- 

 narrow grooves. Telson not yet twice as long as broad 

 anteriorly, spinules of upper surface large. 



Second joint of antennular peduncle a little (A — longer 

 than the visible part of 1st, third joint three fifths of the 

 2°d; stylocerite pointed, reaching to the end of 1st joint. 

 Carpocerite as long as scaphocerite, a little longer than 

 the antennular peduncle; scaphocerite 3-times as long as 

 broad, its outer margin concave, terminal spine reaching 

 a little beyond the blade and curved inward. 



Meropodite of both the larger and the smaller chelipede 

 of the male 2^/2-times as long as broad, upper margin 

 unarmed, infero-internal margin with 4 or 5 small spinules 

 and, at the extremity, with an acute tooth. Larger chela, 

 in the male, rather high, 2,4-times as long as high, com- 

 pressed, with a transverse groove on the flattened upper 



Notes from the Leyden Museum, "Vol. XXX. 



